Civil Engineering MCQs

Page No. 151

Vertical drop fall is satisfactory for a height upto ___________?


a0.5 m


b1.5 m


c3.5 m


d5.0 m


View Answer 1.5 m

A straight glacis type fall with a baffle platform and a baffle wall is called_____________?


avertical dropfall


b glacis fall


cMontague type fall


d inglis fall


View Answer inglis fall

In a Sarda type fall, rectangular crest is used for discharge upto______________?


a6 cumecs


b10 cumecs


c14 cumecs


d 20 cumecs


View Answer 14 cumecs

The sensitivity of a rigid module is_______________?


azero


b between zero and one


c1


dinfinity


View Answer zero

Which of the following canal structures is used to remove surplus water from an irrigation channel into a natural drain ?


acanal fall


bcanal outlet


ccanal escape


dcanal regulator


View Answer canal escape

As per Lacey’s theory, the silt factor is_________________?


adirectly proportional to average par¬ticle size


b inversely proportional to average par¬ticle size


c directly proportional to square root of average particle size


dnot related to average particle size



The ratio of average values of shear stresses produced on the bed and the banks of a channel due to flowing water is________________?


a less than 1


bequal to 1


cgreater than 1


dequal to zero


View Answer greater than 1

According to Khosla’s theory, the exit gradient in the absence of a downstream cutoff is_____________?


a 0


bunity


cinfinity


dvery large


View Answer infinity

As compared to crest of the normal portion of the weir, the crest of the under sluice portion of weir is kept at_____________?


alower level


b higher level


c same level


d any of the above depending on the design


View Answer lower level

The main function of a divide wall is to_______________?


acontrol the silt entry in the canal


bprevent river floods from entering the canal


cseparate the undersluices from weir proper


dprovide smooth flow at sufficiently low velocity



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